2022 International Conference on Dynamics and Vibroacoustics of Machines (DVM)最新文献

{"title":"The Technique Improvement for GTE-Wheel Oscillation Recording by the Noise-Proof Digital Speckle Pattern Interferometer","authors":"A. Ivchenko, A. Safin","doi":"10.1109/DVM55487.2022.9930910","DOIUrl":"https://doi.org/10.1109/DVM55487.2022.9930910","url":null,"abstract":"The paper presents the influence of the mechanical properties of the diffuse-scattering element in the optical scheme of a noise-proof digital speckle pattern interferometer during information recording without isolation from vibration. An improvement the quality of the captured speckle interferograms with an increase in the plexiglass plate thickness of the diffuse-scattering element is shown.","PeriodicalId":227980,"journal":{"name":"2022 International Conference on Dynamics and Vibroacoustics of Machines (DVM)","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121530673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study of Algorithms for Stabilizing the Constant Component of the Output Signal of the Measuring Circuit with a Single-coil Eddy Current Sensitive Element in the Systems for Debris Monitoring of Friction Pairs of Power Plants","authors":"V. Belopukhov, P. Podlypnov","doi":"10.1109/DVM55487.2022.9930924","DOIUrl":"https://doi.org/10.1109/DVM55487.2022.9930924","url":null,"abstract":"The article proposes two algorithmic methods for stabilizing the constant component of the output signal of the measuring circuit with single-coil sensitive elements which are used in sensors for monitoring the metal wear particles in the power plants' lubrication systems. The first algorithm is based on the statistical processing of digital codes obtained as a result of analog-to-digital conversion of voltages at the output of the measuring circuit. The second algorithm involves the implementation of the simplest digital FIR filter “moving average”. The efficiency of the algorithms is investigated, and the limits of their applicability are defined. The choice of the “moving average” algorithm as an optimal according to the criteria of accuracy and performance for the correction of the constant component of the signal on the MC outputs in the system for debris monitoring is substantiated.","PeriodicalId":227980,"journal":{"name":"2022 International Conference on Dynamics and Vibroacoustics of Machines (DVM)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125667942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vibromechanical Characteristics of the Emitting Shells of Small-Sized Low-Frequency Hydroacoustic Piezoelectric High Power Density Transducers","authors":"A. Britenkov, B.N. Bogolybov, M. Norkin, R.V. Travin, S.B. Zakharov","doi":"10.1109/DVM55487.2022.9930906","DOIUrl":"https://doi.org/10.1109/DVM55487.2022.9930906","url":null,"abstract":"Making the sound radiator body, working as radiating shell, is one of the most laborious and complicated technological operations in the technological process of manufacturing hydroacoustic transducers. Making the shell of the longitudinal-bending sonar with piezoelectric active element by laser 3D-printing from metal powders eliminates the problem of encapsulation, resistance to hydrostatic pressure and reduces radiator's parameters dispersion to facilitate its configuration.","PeriodicalId":227980,"journal":{"name":"2022 International Conference on Dynamics and Vibroacoustics of Machines (DVM)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125200692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental Studies of the Block of Hydraulic Control of Distributors","authors":"E. Butakova, V. Doroshenko, A. Noskov","doi":"10.1109/DVM55487.2022.9930935","DOIUrl":"https://doi.org/10.1109/DVM55487.2022.9930935","url":null,"abstract":"The article discusses the test results of three modernized hydraulic control units. During the experiments, hydraulic units were refined with subsequent refinement tests. The following research results were obtained: a characteristic of the dependence of the differential pressure on the flow rate, the dependence of the reduction pressure on the angle of the handle, pressure drops in the working bends of the control unit, etc. Analysis of the results and comparison with theoretical calculation showed that there are three main types of adjustment characteristics: parallel theoretical - with laminar flow, three-zone and quadratic - with turbulent mode.","PeriodicalId":227980,"journal":{"name":"2022 International Conference on Dynamics and Vibroacoustics of Machines (DVM)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116804427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Noise Reduction of Mechanoacoustic Systems by Topological Optimization Method","authors":"Smirnov S.A., Suvorov A.S., Suslov N.S., V'yushkina I.A., Salin M.B.","doi":"10.1109/DVM55487.2022.9930932","DOIUrl":"https://doi.org/10.1109/DVM55487.2022.9930932","url":null,"abstract":"We consider the problem of reducing noise and vibration caused by harmonic sources. The main approaches that exist are the use of damping with different materials or the use of absorption nodes and the addition and redistribution of mass or stiffness. As an alternative and more effective approach, it is proposed to fill the volume of the structure with the optimal spatial configuration of the material. To research this direction, we consider the problem of topological optimization of mechanoacoustic systems characterized by the presence of a point harmonic vibration source. The main feature of the algorithm is the use of the active source power, which is determined by the imaginary part of the vibration velocity vector at the point of force application, as an objective function. The approach to finding the optimum is similar to the solid isotropic material with penalization (SIMP) algorithm. We have selected the parameters of the modified algorithm in order to ensure the efficiency of optimization. Numerical testing of the method was carried out on the problem of minimizing acoustic noise emitted by a square-shaped steel frame immersed in a fluid, when a periodic single force is applied to its wall. As a result of the algorithm, the distribution of the material inside the frame was obtained and a decrease in the average pressure in the outer boundary of the liquid was achieved in a wide frequency band.","PeriodicalId":227980,"journal":{"name":"2022 International Conference on Dynamics and Vibroacoustics of Machines (DVM)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128447456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental Research of Working Processes in the Thermal Unit of a Bacteriological Incubator","authors":"A. Pugachuk, Viktoriya M. Burkhanova, N. K. Fominykh","doi":"10.1109/DVM55487.2022.9930905","DOIUrl":"https://doi.org/10.1109/DVM55487.2022.9930905","url":null,"abstract":"Currently, one of the most common devices used in the cultivation of various microorganisms is an incubator that provides stable temperature conditions inside of the device. Typical design of a bacteriological incubator is considered in this paper and a set of experimental researches is carried out to determine temperature distribution in the working cavity of the device. The parameters of the thermostating system that must be maintained in this type of devices to ensure the cultivation of bacteria are defined. Presented results of analysis provided can be used to design pneumatic systems of bacteriological incubators and study their thermal characteristics.","PeriodicalId":227980,"journal":{"name":"2022 International Conference on Dynamics and Vibroacoustics of Machines (DVM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130256960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Two-Dimensional Discrete Fourier Transform with Variable Parameters in Solving Fundamental Problems of Dynamics and Vibrodiagnostics of Machines","authors":"Ponomarev Alexey, Ponomareva Olga, Smirnova Natalia","doi":"10.1109/DVM55487.2022.9930893","DOIUrl":"https://doi.org/10.1109/DVM55487.2022.9930893","url":null,"abstract":"The aim of the work is to develop new two-dimensional discrete Fourier transform with variable parameters (2D DFT-VP) and to develop fast algorithms for its implementation. Classical two-dimensional discrete Fourier transform (2D DFT), which is a special case of 2D DFT-VP, is known to have a number of negative effects arising from the nature and analytical properties of its basis. Such negative effects of 2D DFT as the aliasing effect, scalloping effect, picket fence effect significantly reduce the efficiency and effectiveness of classic 2D DFT in solving fundamental problems of dynamics and vibration diagnostics of machines and mechanisms. Not to a small extent, this is due to the transition in the dynamics and diagnostics of machines to models of a two-dimensional vibroacoustic finite signal (2D VFD signal) of a complex and mixed structure. New 2D DFT-VP allows solving the important and urgent problem of eliminating (reducing the influence) of the negative effects inherent in 2D DFT on the efficiency and effectiveness of solving fundamental problems of dynamics and vibration diagnostics of machines and mechanisms. The current transition from one-dimensional Fourier processing (1D Fourier processing) to two-dimensional digital Fourier processing (2D Fourier processing) of 2D VFD signals has shown that, firstly, such a transition is far from trivial and, in secondly, when moving from 1D Fourier processing to 2D Fourier processing, computational costs increase by several orders of magnitude. And new 2D DFT-VP is not exception from this perspective. It is necessary to develop methods and algorithms for improving the performance of 2D DFT-VP. In this work, 3 kinds of 2D DFT-VP transforms are considered in detail, and the analytical properties of their bases are investigated. Three groups of methods for increasing the performance of two-dimensional discrete fast Fourier transform with variable parameters are proposed and investigated in the work. The 1st group of methods for improving the performance of 2D DFT-VP is based on the separability property of the core of 2D DFT-VP and the use of one-dimensional parametric DFT (DFT-P). The 2nd group of methods for improving the speed of 2D DFT-VP is based on the property of separability of the kernel of 2D DFT-VP and the use of one-dimensional parametric fast Fourier transforms (FFT-P). The 3rd group of 2D DFT-VP performance improvement methods based on 2D Fast Fourier Transform with variable parameters (2D FFT-VP) in vector base 2, with space decimation, with or without replacement.","PeriodicalId":227980,"journal":{"name":"2022 International Conference on Dynamics and Vibroacoustics of Machines (DVM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123154014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multilateration Large-sized Structure Element Displacement Measurement Using Laser Tracker During Static Loading","authors":"N. Sazonnikova, R. Uklein","doi":"10.1109/DVM55487.2022.9930888","DOIUrl":"https://doi.org/10.1109/DVM55487.2022.9930888","url":null,"abstract":"One of the most important tasks in the assembly of large-sized products is the control of structural elements deformations under different types of loading in static and dynamic modes. The best results in solving this problem can be obtained using laser automated measuring systems, such as laser scanners and laser trackers. A mathematical model of multilateration measuring system is constructed and measurement uncertainty equations are obtained. In this case, the error function value, which is the difference between the errors in determining the coordinates of the reference points and the controlled points of the measurement object, should be minimal. This mathematical model will be further used to select the measuring system optimal configuration for multilateration control of the tank in the static loading process.","PeriodicalId":227980,"journal":{"name":"2022 International Conference on Dynamics and Vibroacoustics of Machines (DVM)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122519328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Position Control of Pneumatic Artificial Muscle Manipulator","authors":"L. Kotkas, N. Zhurkin, A. Donskoy, Aleksander Zharkovskij","doi":"10.1109/DVM55487.2022.9930904","DOIUrl":"https://doi.org/10.1109/DVM55487.2022.9930904","url":null,"abstract":"The article is dedicated to study of position control with operator manual force in balanced pneumatic artificial muscle manipulator. Proposed control approach can be applied for manipulation tasks, which don't require high accuracy. The numerical modelling of static characteristics of operator force demonstrates the effectiveness of this control approach. Also, paper describes the solution that can ensure safety for PAM manipulator in case of a sudden load separation by implementing hydraulic damper. Presented mathematical models are based on the earlier elaborated and experimental validated model of pneumatic artificial muscle.","PeriodicalId":227980,"journal":{"name":"2022 International Conference on Dynamics and Vibroacoustics of Machines (DVM)","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125756012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Density of eigenfrequencies of oscillations of flat orthotropic shells and plates","authors":"T. N. Dogadina, V. Y. Khromatov","doi":"10.1109/DVM55487.2022.9930922","DOIUrl":"https://doi.org/10.1109/DVM55487.2022.9930922","url":null,"abstract":"Vibrations of flat orthotropic shells are considered. Expressions for the asymptotic frequency density are derived. The influence of shell parameters on the eigenfrequency distribution is investigated. Graphs of the asymptotic and empirical densities of the oscillation frequencies of flat shells are plotted. The study of the effect of the shift modulus on the value of the frequency density has shown that the frequency density increases slightly with a decrease of shift moduls, and, on the contrary, the frequency density decreases with an increase of shift moduls. The change in Poisson's ratio does not significantly affect the value of the frequency density.","PeriodicalId":227980,"journal":{"name":"2022 International Conference on Dynamics and Vibroacoustics of Machines (DVM)","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126095666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}